follow Dictionary.com

What's the "een" in Halloween?

D, d

[dee] /di/
noun, plural D's or Ds, d's or ds.
1.
the fourth letter of the English alphabet, a consonant.
2.
any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.
3.
something having the shape of a D .
4.
a written or printed representation of the letter D or d.
5.
a device, as a printer's type, for reproducing the letter D or d.

d-

1.
Symbol, Biochemistry. (of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: always printed as a small capital, roman character (distinguished from l-).
Compare d-.

d-

Symbol, Chemistry, Biochemistry
1.
dextrorotatory; dextro- (distinguished from l-).
Compare D-

d'1

preposition
1.
de (used in French names as an elided form of de):
Charles Louis d'Albert.
2.
di (used in Italian names as an elided form of di):
Gabriele d'Annunzio.

d'2

1.
Pronunciation Spelling. contraction of do or did before you:
How d'you like your eggs cooked? D'you go to the movies last night?

'd

1.
contraction of had:
I was glad they'd gone.
2.
contraction of did:
Where'd they go?
3.
contraction of should or would: He'd like to go. I'd like to remind you of your promise.
4.
contraction of - ed:
She OK'd the plan.

D

1.
Electricity, debye.
2.
deep.
3.
4.
Optics. diopter.
5.
divorced.
6.

D

Symbol.
1.
the fourth in order or in a series.
2.
(sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as poor or barely passing.
3.
(sometimes lowercase) a classification, rating, or the like, indicating poor quality.
4.
Music.
  1. the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.
  2. a string, key, or pipe tuned to this tone.
  3. a written or printed note representing this tone.
  4. (in the fixed system of solmization) the second tone of the scale of C major, called re.
  5. the tonality having D as the tonic note.
5.
(sometimes lowercase) the Roman numeral for 500.
Compare Roman numerals.
6.
Chemistry, deuterium.
7.
Electricity.
  1. electric displacement.
  2. a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 cm); length, 2.4 inches (6 cm).
8.
Biochemistry. aspartic acid.
9.
a symbol for a shoe width size narrower than E and wider than C.
10.
a proportional brassiere cup size larger than C.

D.

1.
day.
2.
3.
5.
Physics. density.
6.
Deus.
8.
9.
dose.
10.

d.1

1.
(in prescriptions) give.
Origin
< Latin

d.2

1.
British, pence.
Origin
< Latin denāriī

d.3

1.
date.
2.
3.
day.
4.
5.
deep.
6.
7.
8.
Physics. density.
9.
10.
11.
12.
13.
14.
died.
15.
dime.
16.
17.
dollar; dollars.
18.
dose.
19.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for d
  • These flutes were often tuned to the key of d, and used as the tenor voice.
  • Show movie from new line cinema, and the first draft of the tenacious d movie.
  • d in his book the psychotechnology of brainwashing crucifying willie lynch.
  • d and was a professor at the university of physical culture and sport in moscow.
  • Because d sugars are biologically far more common, the d is often omitted.
British Dictionary definitions for d

d

/diː/
noun (pl) d's, D's, Ds
1.
the fourth letter and third consonant of the modern English alphabet
2.
a speech sound represented by this letter, usually a voiced alveolar stop, as in dagger
3.
the semicircle on a billiards table having a radius of 111/2 inches and its straight edge in the middle of the baulk line

d

symbol
1.
(physics) density or relative density
2.
(maths) a small increment in a given variable or function: used to indicate a derivative of one variable with respect to another, as in dy/dx
3.
(chess) See algebraic notation

D

symbol
1.
(music)
  1. a note having a frequency of 293.66 hertz (D above middle C) or this value multiplied or divided by any power of 2; the second note of the scale of C major
  2. a key, string, or pipe producing this note
  3. the major or minor key having this note as its tonic
2.
(chem) deuterium
3.
(maths) the first derivative of a function, as in D(x³ + x²) = 3x² + 2x
4.
(physics)
  1. dispersion
  2. electric displacement
5.
(aeronautics) drag
6.
  1. a semiskilled or unskilled manual worker, or a trainee or apprentice to a skilled worker
  2. (as modifier): D worker See also occupation groupings
7.
(Roman numeral) 500 See Roman numerals
abbreviation
8.
Germany (international car registration)
9.
  1. (Austral, informal) defence: I'm playing D in the match this afternoon
  2. (Austral, informal) defensive play
Word Origin
(for sense 8) from German Deutschland

D

abbreviation
1.
Deutsch: indicating the serial number in the catalogue (1951) of the musical compositions of Schubert made by Otto Deutsch (1883–1967)

d.

abbreviation
1.
(in animal pedigrees) dam
2.
daughter
3.
(Brit, currency) penny or pennies
4.
diameter
5.
died
6.
dinar(s)
7.
dollar(s)
8.
drachma(s)
Word Origin
(sense 3 and 6) Latin denarius

D.

abbreviation
1.
(US, politics) Democrat(ic)
2.
(government) Department
3.
dinar(s)
4.
Don (a Spanish title)
5.
Duchess
6.
Duke
7.
(in the US and Canada) Doctor

'd

contraction
1.
would or had: I'd, you'd
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for d

D

fourth letter of the Roman alphabet, from Greek delta, from Phoenician and Hebrew daleth, pausal form of deleth "door," so called from its shape. The sign for "500" in Roman numerals. 3-D for "three-dimensional" is attested from 1953.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
d in Medicine

d- pref.
Relating to the configuration of d-glyceraldehyde, a compound chosen as the basis for stereochemical nomenclature because it is the simplest carbohydrate that can form optical isomers: d-fructose.

D 1

The symbol for the isotope deuterium.

D 2
abbr.

  1. dexter

  2. diffusing capacity

  3. dead space

D. abbr.

  1. diopter

  2. dose

d- pref. d-
To the right; dextro: d-tartaric acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
d in Science
d  
Abbreviation of diameter
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Slang definitions & phrases for d

D

noun

A dollar

Related Terms

big d, take a d, three d


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
Cite This Source
d in Technology


1. "The Data Language." MS-DOS 4GL.
2. A Haskell-like language, with type classes.
E-mail: .

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
Related Abbreviations for d

d

  1. deuteron
  2. diameter
  3. differential
  4. down quark

D

  1. dative
  2. day
  3. Democrat
  4. determiner
  5. deuterium
  6. [suggestive] dialogue (television rating)
  7. diction
  8. divorced
  9. down
  10. Dutch
  11. 500
  12. Germany (international vehicle ID)

d.

  1. date
  2. daughter
  3. deputy
  4. died
  5. dose
  6. drachma
  7. pence

D.

  1. department
  2. Deus
  3. diopter
  4. Don
  5. duchess
  6. duke
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Word Value for d

0
0
Scrabble Words With Friends

Quotes with d

Nearby words for d